gcc/testsuite/gcc.dg/compare6.c

   1 /* PR c/2098 */
   2 /* Test for a warning on comparison on out-of-range data.  */
   3 /* { dg-do compile } */
   4 /* { dg-xfail-if "" { c4x-*-* } { "*" } { "" } } */
   5 /* { dg-options "-Wtype-limits" } */
   6
   7 signed char sc;
   8 unsigned char uc;
   9
  10 void foo()
  11 {
  12   if (sc == 10000) return; /* { dg-warning "always false" "signed" } */
  13   if (uc == 10000) return; /* { dg-warning "always false" "unsigned" } */
  14 }